from datetime import datetime
from decimal import Decimal

import pytz
from flask import jsonify
from flask_login import current_user
from flask_restful import Resource, reqparse

from controllers.console import api
from controllers.console.app.wraps import get_app_model
from controllers.console.setup import setup_required
from controllers.console.wraps import account_initialization_required
from extensions.ext_database import db
from libs.helper import datetime_string
from libs.login import login_required
from models.model import AppMode
from models.workflow import WorkflowRunTriggeredFrom


class WorkflowDailyRunsStatistic(Resource):
    @setup_required
    @login_required
    @account_initialization_required
    @get_app_model
    def get(self, app_model):
        account = current_user

        parser = reqparse.RequestParser()
        parser.add_argument('start', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        parser.add_argument('end', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        args = parser.parse_args()

        sql_query = '''
        SELECT date(DATE_TRUNC('day', created_at AT TIME ZONE 'UTC' AT TIME ZONE :tz )) AS date, count(id) AS runs
            FROM workflow_runs 
            WHERE app_id = :app_id 
                AND triggered_from = :triggered_from
        '''
        arg_dict = {'tz': account.timezone, 'app_id': app_model.id, 'triggered_from': WorkflowRunTriggeredFrom.APP_RUN.value}

        timezone = pytz.timezone(account.timezone)
        utc_timezone = pytz.utc

        if args['start']:
            start_datetime = datetime.strptime(args['start'], '%Y-%m-%d %H:%M')
            start_datetime = start_datetime.replace(second=0)

            start_datetime_timezone = timezone.localize(start_datetime)
            start_datetime_utc = start_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at >= :start'
            arg_dict['start'] = start_datetime_utc

        if args['end']:
            end_datetime = datetime.strptime(args['end'], '%Y-%m-%d %H:%M')
            end_datetime = end_datetime.replace(second=0)

            end_datetime_timezone = timezone.localize(end_datetime)
            end_datetime_utc = end_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at < :end'
            arg_dict['end'] = end_datetime_utc

        sql_query += ' GROUP BY date order by date'

        response_data = []

        with db.engine.begin() as conn:
            rs = conn.execute(db.text(sql_query), arg_dict)
            for i in rs:
                response_data.append({
                    'date': str(i.date),
                    'runs': i.runs
                })

        return jsonify({
            'data': response_data
        })

class WorkflowDailyTerminalsStatistic(Resource):
    @setup_required
    @login_required
    @account_initialization_required
    @get_app_model
    def get(self, app_model):
        account = current_user

        parser = reqparse.RequestParser()
        parser.add_argument('start', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        parser.add_argument('end', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        args = parser.parse_args()

        sql_query = '''
                SELECT date(DATE_TRUNC('day', created_at AT TIME ZONE 'UTC' AT TIME ZONE :tz )) AS date, count(distinct workflow_runs.created_by) AS terminal_count
                    FROM workflow_runs 
                    WHERE app_id = :app_id 
                        AND triggered_from = :triggered_from
                '''
        arg_dict = {'tz': account.timezone, 'app_id': app_model.id, 'triggered_from': WorkflowRunTriggeredFrom.APP_RUN.value}

        timezone = pytz.timezone(account.timezone)
        utc_timezone = pytz.utc

        if args['start']:
            start_datetime = datetime.strptime(args['start'], '%Y-%m-%d %H:%M')
            start_datetime = start_datetime.replace(second=0)

            start_datetime_timezone = timezone.localize(start_datetime)
            start_datetime_utc = start_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at >= :start'
            arg_dict['start'] = start_datetime_utc

        if args['end']:
            end_datetime = datetime.strptime(args['end'], '%Y-%m-%d %H:%M')
            end_datetime = end_datetime.replace(second=0)

            end_datetime_timezone = timezone.localize(end_datetime)
            end_datetime_utc = end_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at < :end'
            arg_dict['end'] = end_datetime_utc

        sql_query += ' GROUP BY date order by date'

        response_data = []

        with db.engine.begin() as conn:
            rs = conn.execute(db.text(sql_query), arg_dict)            
            for i in rs:
                response_data.append({
                    'date': str(i.date),
                    'terminal_count': i.terminal_count
                })

        return jsonify({
            'data': response_data
        })

class WorkflowDailyTokenCostStatistic(Resource):
    @setup_required
    @login_required
    @account_initialization_required
    @get_app_model
    def get(self, app_model):
        account = current_user

        parser = reqparse.RequestParser()
        parser.add_argument('start', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        parser.add_argument('end', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        args = parser.parse_args()

        sql_query = '''
                SELECT 
                    date(DATE_TRUNC('day', created_at AT TIME ZONE 'UTC' AT TIME ZONE :tz )) AS date, 
                    SUM(workflow_runs.total_tokens) as token_count
                FROM workflow_runs 
                WHERE app_id = :app_id 
                    AND triggered_from = :triggered_from
                '''
        arg_dict = {'tz': account.timezone, 'app_id': app_model.id, 'triggered_from': WorkflowRunTriggeredFrom.APP_RUN.value}

        timezone = pytz.timezone(account.timezone)
        utc_timezone = pytz.utc

        if args['start']:
            start_datetime = datetime.strptime(args['start'], '%Y-%m-%d %H:%M')
            start_datetime = start_datetime.replace(second=0)

            start_datetime_timezone = timezone.localize(start_datetime)
            start_datetime_utc = start_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at >= :start'
            arg_dict['start'] = start_datetime_utc

        if args['end']:
            end_datetime = datetime.strptime(args['end'], '%Y-%m-%d %H:%M')
            end_datetime = end_datetime.replace(second=0)

            end_datetime_timezone = timezone.localize(end_datetime)
            end_datetime_utc = end_datetime_timezone.astimezone(utc_timezone)

            sql_query += ' and created_at < :end'
            arg_dict['end'] = end_datetime_utc

        sql_query += ' GROUP BY date order by date'

        response_data = []

        with db.engine.begin() as conn:
            rs = conn.execute(db.text(sql_query), arg_dict)
            for i in rs:
                response_data.append({
                    'date': str(i.date),
                    'token_count': i.token_count,
                })

        return jsonify({
            'data': response_data
        })

class WorkflowAverageAppInteractionStatistic(Resource):
    @setup_required
    @login_required
    @account_initialization_required
    @get_app_model(mode=[AppMode.WORKFLOW])
    def get(self, app_model):
        account = current_user

        parser = reqparse.RequestParser()
        parser.add_argument('start', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        parser.add_argument('end', type=datetime_string('%Y-%m-%d %H:%M'), location='args')
        args = parser.parse_args()

        sql_query = """
            SELECT 
                AVG(sub.interactions) as interactions,
                sub.date
            FROM
                (SELECT 
                    date(DATE_TRUNC('day', c.created_at AT TIME ZONE 'UTC' AT TIME ZONE :tz )) AS date, 
                    c.created_by,
                    COUNT(c.id) AS interactions
                FROM workflow_runs c
                WHERE c.app_id = :app_id
                    AND c.triggered_from = :triggered_from
                    {{start}}
                    {{end}}
                GROUP BY date, c.created_by) sub
            GROUP BY sub.date
            """
        arg_dict = {'tz': account.timezone, 'app_id': app_model.id, 'triggered_from': WorkflowRunTriggeredFrom.APP_RUN.value}

        timezone = pytz.timezone(account.timezone)
        utc_timezone = pytz.utc

        if args['start']:
            start_datetime = datetime.strptime(args['start'], '%Y-%m-%d %H:%M')
            start_datetime = start_datetime.replace(second=0)

            start_datetime_timezone = timezone.localize(start_datetime)
            start_datetime_utc = start_datetime_timezone.astimezone(utc_timezone)

            sql_query = sql_query.replace('{{start}}', ' AND c.created_at >= :start')
            arg_dict['start'] = start_datetime_utc
        else:
            sql_query = sql_query.replace('{{start}}', '')

        if args['end']:
            end_datetime = datetime.strptime(args['end'], '%Y-%m-%d %H:%M')
            end_datetime = end_datetime.replace(second=0)

            end_datetime_timezone = timezone.localize(end_datetime)
            end_datetime_utc = end_datetime_timezone.astimezone(utc_timezone)

            sql_query = sql_query.replace('{{end}}', ' and c.created_at < :end')
            arg_dict['end'] = end_datetime_utc
        else:
            sql_query = sql_query.replace('{{end}}', '')

        response_data = []
        
        with db.engine.begin() as conn:
            rs = conn.execute(db.text(sql_query), arg_dict)
            for i in rs:
                response_data.append({
                    'date': str(i.date),
                    'interactions': float(i.interactions.quantize(Decimal('0.01')))
                })

        return jsonify({
            'data': response_data
        })

api.add_resource(WorkflowDailyRunsStatistic, '/apps/<uuid:app_id>/workflow/statistics/daily-conversations')
api.add_resource(WorkflowDailyTerminalsStatistic, '/apps/<uuid:app_id>/workflow/statistics/daily-terminals')
api.add_resource(WorkflowDailyTokenCostStatistic, '/apps/<uuid:app_id>/workflow/statistics/token-costs')
api.add_resource(WorkflowAverageAppInteractionStatistic, '/apps/<uuid:app_id>/workflow/statistics/average-app-interactions')
